package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.OrderService;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import io.swagger.annotations.ApiOperation;
import io.swagger.util.Json;
import jdk.javadoc.internal.doclets.toolkit.taglets.ReturnTaglet;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.util.StringUtil;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class ReportServiceImpl implements ReportService{


    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private ReportService reportService;

    @Autowired
    private WorkspaceService workspaceService;
    /**
     * 根据时间区间统计营业额
     * @param begin
     * @param end
     * @return
     */
    public TurnoverReportVO getTunrover(LocalDate begin, LocalDate end) {

        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);

        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        List<Double> turnoverList = new ArrayList<>();
        for (LocalDate localDate : dateList) {
            LocalDateTime beginTime =LocalDateTime.of(localDate, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(localDate,LocalTime.MAX);
            Map map = new HashMap();
            map.put("status", Orders.COMPLETED);
            map.put("begin",begin);
            map.put("end",end);

            Double turnover = orderMapper.sumByMap(map);
            turnover = turnover ==null? 0.0:turnover;
            turnoverList.add(turnover);
        }
      return TurnoverReportVO.builder()
              .dateList(StringUtils.join(dateList,","))
              .turnoverList(StringUtils.join(turnoverList,","))
              .build();
    }

    /**
     * 用户数据统计
     * @param begin
     * @param end
     * @return
     */
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin =begin.plusDays(1);
            dateList.add(begin);
        }
//        新增用户数
        List<Integer> newUserList = new ArrayList<>();
//        总用户数
        List<Integer> totalUserList = new ArrayList<>();

        for (LocalDate localDate : dateList) {
            LocalDateTime beginTime = LocalDateTime.of(localDate,LocalTime.MIN);
            LocalDateTime endTime =LocalDateTime.of(localDate,LocalTime.MAX);

            Integer newUser = getUserCount(beginTime,endTime);

            Integer totalUser =getUserCount(null,endTime);

            newUserList.add(newUser);
            totalUserList.add(totalUser);

        }

        return UserReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .totalUserList(StringUtils.join(totalUserList,","))
                .build();
    }


    /**
     * 根据时间区间用户统计
     * @param beginTime
     * @param endTime
     * @return
     */
    public Integer getUserCount(LocalDateTime beginTime,LocalDateTime endTime){
        Map map = new HashMap();
        map.put("begin",beginTime);
        map.put("end",endTime);
        return userMapper.countByMap(map);
    }


    /**
     * 订单数据统计
     * @param begin
     * @param end
     * @return
     */
    public OrderReportVO getOrderStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();

        dateList.add(begin);

        while (!begin.equals(end)){
            begin = begin.plusDays(1);
            dateList.add(begin);
        }

//        每天订单总数集合
        List<Integer> orderCountList =new ArrayList<>();
//        每天有效订单数集合
        List<Integer> validOrderCountList = new ArrayList<>();

        for (LocalDate localDate : dateList) {
            LocalDateTime beginTime = LocalDateTime.of(localDate,LocalTime.MIN);
            LocalDateTime endTime =LocalDateTime.of(localDate,LocalTime.MAX);

//            查询每天订单数
            Integer orderCount =getOrderCount(beginTime,endTime,null);
//            查询每天的有效订单数
            Integer vaildOrderCount = getOrderCount(beginTime,endTime, Orders.COMPLETED);

            orderCountList.add(orderCount);
            validOrderCountList.add(vaildOrderCount);
        }
        //时间区间内的总订单数
        Integer totalOrderCount =orderCountList.stream().reduce(Integer::sum).get();
        //时间区间内的有效订单数
        Integer vaildOrderCount =validOrderCountList.stream().reduce(Integer::sum).get();

        Double orderCompletionRate =0.0;

//        订单完成率
        if(totalOrderCount!=0){
            orderCompletionRate = vaildOrderCount.doubleValue()/totalOrderCount;
        }
        return OrderReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(vaildOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .build();
    }

    /**
     * 根据时间区间统计订单数量
     * @param beginTime
     * @param endTime
     * @param status
     * @return
     */
    private Integer getOrderCount(LocalDateTime beginTime,LocalDateTime endTime,Integer status){
        Map map = new HashMap();
        map.put("status",status);
        map.put("begin",beginTime);
        map.put("end",endTime);
        return orderMapper.countByMap(map);
    }

    /**
     * 销售排名统计
     * @param begin
     * @param end
     * @return
     */
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {

        LocalDateTime beginTime =LocalDateTime.of(begin,LocalTime.MIN);
        LocalDateTime endTime =LocalDateTime.of(end,LocalTime.MAX);

        List<GoodsSalesDTO> goodsSalesDTOList = orderMapper.getSalesTop10(beginTime,endTime);

        String nameList=StringUtils.join(goodsSalesDTOList.stream()
                .map(GoodsSalesDTO::getName).collect(Collectors.toList()),"," );
        String numberList =StringUtils.join(goodsSalesDTOList.stream()
                .map(GoodsSalesDTO::getNumber).collect(Collectors.toList()),"," );

        return SalesTop10ReportVO.builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }


    /**
     * 导入近30天的运营数据报表
     * @param response
     */
    public void exportBusinessData(HttpServletResponse response) {
        LocalDate begin = LocalDate.now().minusDays(30);
        LocalDate end = LocalDate.now().minusDays(1);

        //查询运营数据，提供给excel模板文件
        BusinessDataVO businessDataVO = workspaceService.getBusinessData(LocalDateTime.of(begin,LocalTime.MIN),
                LocalDateTime.of(end,LocalTime.MAX));
        InputStream inputStream = this.getClass().getClassLoader().
                getResourceAsStream("template/运营数据报表模板.xlsx");

        try {
            //基于提供好的模板文件创建一个新的excel表格对象
            XSSFWorkbook excel = new XSSFWorkbook(inputStream);
            //获取Excel文件中的一个sheet页
            XSSFSheet sheet = excel.getSheet("sheet1");

            sheet.getRow(1).getCell(1).setCellValue(begin +"至"+end);

            //get到第四行
            XSSFRow row = sheet.getRow(3);

            //获取单元格
            row.getCell(2).setCellValue(businessDataVO.getTurnover());
            row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessDataVO.getNewUsers());
            row =sheet.getRow(4);
            row.getCell(2).setCellValue(businessDataVO.getValidOrderCount());
            row.getCell(4).setCellValue(businessDataVO.getUnitPrice());

            for (int i = 0; i <30 ; i++) {
                LocalDate date = begin.plusDays(i);
                //准备明细数据
                businessDataVO =workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN),
                        LocalDateTime.of(date,LocalTime.MAX));
                row =sheet.getRow(7+i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessDataVO.getTurnover());
                row.getCell(3).setCellValue(businessDataVO.getValidOrderCount());
                row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessDataVO.getUnitPrice());
                row.getCell(6).setCellValue(businessDataVO.getNewUsers());
            }
            //通过输出流将文件下载到客户端浏览器中
            ServletOutputStream outputStream = response.getOutputStream();
            excel.write(outputStream);
            //关闭资源
            outputStream.flush();
            outputStream.close();
            excel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }
}
